ptfe ( ) coated fiberglass fabrics and adhesive tapes
PTFE (Poly–tetra-fluoro-ethylene) is a synthetic fluoropolymer ‘accidentally’ invented by Roy Plunkett that finds numerous applications. It is well known by the DuPont band name Teflon. PTFE is a material of remarkable properties; non-stick, friction-free, self-lubricating, non-wetting, non-flammable, non-brittle, non-toxic, resistant to atmospheric conditions, resistant to fungus growth and resistant to all chemicals (except molten alkali metals and fluorine at elevated temperatures and pressures). Its electrical properties are equally outstanding. All properties are maintained over a wide working temperature range of -200oC to +350oC.

Fiber-Glass too is a material of remarkable properties. Fabrics made from continuous filament yarn exhibit superior properties in terms of high tensile strength, low elongation, high temperature resistance, electric and sound insulation etc.
Back in 1980 Unnati, having received technical support from DuPont, was one of the first companies in India to develop a matrix of the two materials - PTFE + Fiberglass i.e. PTFE coated Glass Cloth. Although not the first to develop we are now by far, the largest manufacturer. Various varieties are made on our towers which are the most sophisticated in the country. Should the end application demand colourful fabrics - we have them. Controlled manufacturing processes and rigid inspection procedures give the right quality of the material that is capable of resolving a wide range of problems. Conductive grades of fabrics are also our specialty where the static & charge needs to be handled carefully.

Requirements to cover Antennas at high altitudes have been successfully matched with PTFE coated fiber glass fabrics used as Radomes. Special grades have been developed which allows micro-waves to pass through. They protect the Antennas from snow, dust, rain, moisture, bird nest etc. Urja has manufactured over 200 radomes with many exceeding diameters of 3 meters.

We offer a wider range of PTFE products than any other manufacturer, including PTFE coated Glass Fabric in sheets, rolls, tapes, discs, laminates, belts and threads.
APPLICATIONS
HEAT SEALING IN PACKAGING INDUSTRIES
  • Poly-bag manufacturers
  • Milk, Ghee and Dairy products
  • Bread and biscuits
  • Garment manufacturers for fusing press
  • Laminating shoe inner soles
  • High frequency welding of PVC/HDPE pipes
  • Wide width plastic tarpaulins for food
  • Storage and canal lining
  • Milk, Ghee and Dairy products
FOOD INDUSTRY
  • Fish freezing on cloth allowing easy release of frozen
    blocks
  • Being non-toxic, PTFE Coated Glass Cloth is useful
    an ywhere in the Food industry for anti-stick applications.
  • Conveyor belts for biscuits, cocoa powder and food stuff
    through vacuum dryers
  • A necessary for dairies and others producing
    chocolates, jams, tomato ketchups, frozen cereals, etc
NON-STICK
  • We have the answer to your Sticky , Messy problems
  • Lining of confectionary trays
  • Covering various rollers in practically all industries
  • Chute Lining in sugar and flour industries
  • In manufacture of grinding wheels for interleaving
    discs, as separators whilst curing.
  • Excellent release cloth, when molding resin bonded laminates
TEXTILES
  • Covering drying cylinders to prevent sticking and size build-up
  • Entrance and exit curtains on drying ovens
  • Used for laminating fabrics and PU Foam
  • Garment manufacturing- collar fusing
HDPE WOVEN SACKS
  • Ideal for TAPE and LAMINATION plants
PRINTING
  • Color masking on four color off-set litho printing machines
CHEMICAL INDUSTRY
  • Protective curtains in chemical process plants limiting splashing and fumes
  • Protective clothing and aprons
  • Easy release surface for Adhesives, Paints, Varnishes, Resins, etc
Specifications of a few PTFE Coated Glass Fabrics
Quality Thickness in mm+/- 0.02mm Wt/ sq. Meters In gm+/- 10% Tensile Strength in kg 1”X4”
Warp Weft
3NP Porous 0.07 75 25 20
3NP Plain 0.08 135 25 20
5NP EG Plain 0.11 235 45 45
5NP Plain 0.12 250 50 50
6NP Plain 0.14 280 45 45
10NP Porous 0.20 260 80 80
10NP Plain 0.25 520 80 70
14NP Plain 0.33 660 125 125
22NP Plain 0.52 1000 130 120
28NP Plain 0.67 1200 140 130

THESE ARE ALL NOMINAL VALUES
ONE SIDE ADHESIVE TAPES & FABRICS
The entire packaging industry across India is aware and associated with our range of UNITO Tapes which are used for heat sealing applications. PTFE coated Glass Cloth is coated on one side with high temperature resistant pressure sensitive silicone adhesive. To ensure proper bonding between the surface of the fabric and the adhesive, the fabrics is ‘etched’ with the latest technology. PTFE COATED TAPES stick well to the heating element, allowing the heat to transfer and fuse the plastic without the plastic sticking to the heating element ensuring a permanent seal. Properties of the adhesive make this fabric versatile for most end applications. This fabric withstands temperatures up to 280oC and serves as an excellent anti-stick surface where the requirements are stringent. OSA (One side Adhesive) tapes are available in various sizes.


We are, in a major way, responsible for the safe delivery of your morning milk pouch / satchet. Our fiberglass tapes with Acrylic and Silicon adhesives are used for electrical insulation. These tapes demonstrate high dielectric strength while retaining their pressure sensitive nature. Essentially used in electric motors, transformers, generators etc
Specifications of a few Adhesive Coated PTFE Glass Fabrics
Quality Thickness in mm+/- 0.02mm Wt/ sq. Meters In gm+/- 10% Tensile Strength in kg 1”X4”
Warp Weft
5NP Plain O.S.A. 0.20 330 50 50
5NP Stick well O.S.A. 0.20 330 50 50
5NP 2116 OSA 0.181 310 45 45
10NP O.S.A. 0.30 550 80 70
5NP ‘K’ OSA 0.23 390 50 50

THESE ARE ALL NOMINAL VALUES